Charles f



' 4 (No Model.)

O. 1?. LEOPOLD.

SAW SET.

No. 451,494. Patented May 5, 1891. f

unum'anmu MH-nesses:

UNITED STATES Y PATENT OFFICE.

CHARLES E. LEOPOLD, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO IVILLIAM J. LLOYD, OF SAME PLACE.

SAW-SET.

SPECIFICATION forming part of Letters Patent No. 451,494, dated May 5, 1891.

Application filed January 28, 1891. Serial No. 379,357- (No model.)

ings, which form a part of this specification.

My invention relates/to the devices known as saw-sets, and has for its object to provide an improved tool of this kind simple in construction and efficient in its operation.

The invention will be best understood as described in connection with the drawings, in'

which I have illustrated it as embraced in a hand-tool, and in which-- Figure 1 is a side elevation of the tool; Fig. 2, a side elevation,partly taken in section, on

.the line 3 4 of Fig. 3; Fig; 3, a front elevation, partly in section, on the line 1 2 of Fig. 2; Fig. 4, a perspective View of the adjustable gage-stop; Fig. 5, a perspective view of the anvil; and Fig. 6 an enlarged elevation, partly in section, showing the mode of operation of the jaw.

A is a lever, on the short arm of which is a pivot-carrying extension B and an anvil-carrying extension B".

O is a pivot to which the jaw of the tool is secured.

E is an opening or socket in the jaw D, in which is secured the anvil-block F, F being the active surface of the anvil.

G is a clamping-screw to hold the anvilblock in place.

H II are pivot and clamping screws screwing into the lever A and upon which are pivoted the arms I, which support at their other extremities an eccentricaliy curved gagestop J.

The marks K K K &c., on the edge of the eccentric gage-stop indicate adjustments of sundry standard sizes of saw-teeth.

L is a lever, which is pivoted to the lever A by the pin G, and on the shorter arm of which is formed the bending-jaw M.

N is a spring acting to hold the two leverarms A and L apart, as shown in the drawings.

It will be seen that when a saw-blade is inserted between the bending-jaw M and the anvil-face F it will rest against the eccentric gage-stop J, and that by bringing the two long arms of the levers together the jaw M is brought down, clamping and bending the sawteeth against which it strikes. The adjustment for different sizes of saw-teeth is made simply by swinging the eccentric gage-stop J on the pivots H.

In its general features the combination of the two levers A and L, one carrying an anvil and the other a bending-jaw, is old and in common use, but in devices of this kind with which I am familiar the clamping-jaw and anvil bear such a relationship to each other that when they are acting to bend the tool to the saw they have a tendency to thrust the saw-blade out away from the gage, so that unless considerable force and care are exercised the teeth will not be bent upon the proper line. In my construction I have overcome this difficulty by so pivoting the clamping-j aw M with respect to the anvil that at the time it engages the saw-tooth resting upon the anvil it shall be moving in a direction toward the gage-stop, so that its action will be rather to pull the saw-blade in than to push it out. This action is best illustrated in Fig. 6,where the full lines indicate the normal position of the clamping-j aw and the dotted lines the position of the clamping of the jaw when it rests against the anvil-face, the motion of the jaw from its normal position toward the anvil being such as to draw the saw inward.

I prefer, in connection with a clamping-jaw pivoted in the way above described, to construct the active anvil-face F with an incli nation upward and inward, as shown, giving the clamping-jaw of course a corresponding shape, so that its face will rest against the anvil-face when brought down upon it. The combination of the anvil-face and jaw-face thus formed and pivoted, as above described, I have found to be the best for drawing in the saw-blade during the operation of bending its teeth.

Having now described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a saw-set, thecombination,with a lever A, supporting an anvil and a stop, of a lever L, pivoted to lever A and having a bindingjaw M at its end placed with respect to the pivot so as to move inward toward the anvil 5 in bending a saw-tooth.

2. In a hand saw-set, the c0n1bination,\vith an upwardly and inwardly inclined ai1vil-face and a stop, of a bending-jaw having its face formed to incline downward and outward 10 when resting against the anvil, said jaw being pivoted, as described, to move in toward the stop While clamping and bending the sawtoot-h against the anvil.

3. In a saw-set having an anvil and pivoted 15 bending-j aw, the combinatiomwith the anvilsupporti n lever,of the pivoted eccentric gage- CHARLES l LEOPOLD.

Witnesses:

LISLE SToKEs, FRANCIS T. CHAMBERS. 

